Finding the Fourth Proportional to 489,979.79, 676,205.54 and 272,213.99
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Solution
The fourth proportional to 489,979.79, 676,205.54 and 272,213.99 is: 375,673.88
Step by Step Solution
- Step 1: Write the proportion equation
489,979.79 : 676,205.54 = 272,213.99 : x - Step 2: Convert to fraction form
489,979.79/676,205.54 = 272,213.99/x - Step 3: Cross multiply
489,979.79x = 676,205.54 × 272,213.99 - Step 4: Simplify right side
489,979.79x = 184,072,608,103.51 - Step 5: Solve for x
x = 184,072,608,103.51/489,979.79 - Step 6: Final answer
x = 375,673.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.